auer HRC70 - Electrical Components Maintenance; Checking Operating Temperatures; Accessing Control Readings and Internal; External Controls

- INSTALLER 7 & 11kW HRC
70
HIGH TEMPERATURE HEAT PUMP MANUAL -
37
The HRC
70
Heat Pump uses a type R290 refrigerant. Given the
 ammable nature of this  uid, any work on the refrigerant circuit
must be carried out using suitable equipment which complies
with the current rules and regulations. When handling the  uid
(recovery, draining or re lling), the machine must be disconnected
from the power supply. Do not smoke or light  ames (lighter,
blow-torch) when handling the  uid. If it is necessary to work on
the refrigerant circuit using a  ame (a blow-torch) the refrigerant
circuit must be drained and emptied beforehand and a nitrogen
vacuum must be created.
• Always disconnect the appliance from the
power supply before accessing electrical
terminals.
• Do not put water on any electrical parts.
6.4 - Electrical components maintenance
• Check on both the HRC
70
Heat Pump and HRC
70
Pilot that the
electrical power supply cables are connected properly on the
terminals.
• Check for oxidation or overheated areas on the electrical
connections.
• Check that the cables are well-tightened on the compressor
starters.
• Clean any dust from the electrical box and check the
connections.
• Check that the ground cable is properly connected.
Check the values read by the HRC
70
Heat Pump
di s p l a y
3 sec
A M B I e NC E 1
2 0 . 0 °C
A M B I e NC E 2
21 . 0 °C
o u t s i de
1 0.0 °C
Circuit 1 ambient temperature
(with sensor)
Circuit 2 ambient temperature
(with sensor)
Outdoor temperature
example
example
example
6.5.1 - Accessing control readings and internal /
external controls
6.5 - Checking operating temperatures
h e a t cu r v e
4 0.0 °C
Outdoor temperature
example
h p i n pu t
4 3 .5 °C
h p o u tp u t
5 2.6 °C
E V A P O
6 .2 °C
c o m p r es
9 7 .0 °C
P i l o t
4 0 .0 °C
P R E S S u r e
0 . 7
Dh w t em p
5 3.0 °C
a i r h p
6.2 °C
Temperature of water
returning to Heat Pump
Temperature of water leaving
from Heat Pump
Outdoor air temperature
measured by Heat Pump
Evaporator temperature (part
of Heat Pump)
Temperature of compressor 1
discharge
Temperature of water leaving
from HRC
70
Pilot
Pressure in heating circuit (in
bar)
Temperature of DHW tank
example
example
example
example
example
example
example
example
A Q U A S TA T
0
Circuit 2 DHW aquastat (no
heating request = 0, heating
request =1)
example